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2016 | Book

Synergetics and Fractals in Tribology

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About this book

This book examines the theoretical and practical aspects of tribological process using synergy, fractal and multifractal methods, and the fractal and multifractal models of self-similar tribosystems developed on their basis. It provides a comprehensive analysis of their effectiveness, and also considers the method of flicker noise spectroscopy with detailed parameterization of surface roughness friction. All models, problems and solutions are taken and tested on the set of real-life examples of oil-gas industry. The book is intended for researchers, graduate students and engineers specialising in the field of tribology, and also for senior students of technical colleges.

Table of Contents

Frontmatter
Chapter 1. Key Features and Operating Conditions of Tribocoupling
Abstract
The improvement of the machine reliability and durability is one of the most challenging tasks of modern engineering. In most cases, the equipment longevity is limited to the surface wear of individual friction parts, but the growing productivity exposes machines to extreme stresses, heavy loading, fast speeds, and high temperatures. So the wear resistance becomes highly dependent on mechanical, physical, and chemical processes that take place in friction contacts. All that comprise the foundation of modern tribology studying.
Ahad Kh. Janahmadov, Maksim Y. Javadov
Chapter 2. Scientific Foundations of Stochastic Tribomodeling
Abstract
Modeling (simulation) is one of the most effective methods of knowledge. The effectiveness of modeling (simulation) as a tool for learning is determined, above all, by the ability to highlight the main (essential) and to abstract the minor (inconsequential).
Ahad Kh. Janahmadov, Maksim Y. Javadov
Chapter 3. Synergetic Model of Fracture and Mechanics of Fatigue Cracks During Friction
Abstract
The difficulty with predicting the fatigue failure of metals and alloys is due to the fact that the fatigue resistance depends on several factors: the type and condition of loading, the stress state of node details, the asymmetry of loading cycle, the scale factor, temperatures, the structural state of material, the media influence, and the state of friction surface.
Ahad Kh. Janahmadov, Maksim Y. Javadov
Chapter 4. Fractal Kinetics of Fracture
Abstract
Fractals are called geometric objects: line, surface, spatial body having very jagged shape, and self-similarity.
Ahad Kh. Janahmadov, Maksim Y. Javadov
Chapter 5. Multifractal Analysis of Fatigue Failure
Abstract
Various physical objects and signals even those with self-similarity very rarely can be described with only one value—the fractal dimension. That is why analyses based on the multifractal theory (inhomogeneous fractal objects) have received widespread. The multifractal provides vast new possibilities of fractal analysis for the complex stochastic processes.
Ahad Kh. Janahmadov, Maksim Y. Javadov
Chapter 6. Fractal Analysis of Fatigue Failure of Kinematic Pair (Oil–Gas Xmas Tree Valve)
Abstract
One of the most important types of oil field equipment is Xmas tree, designed to insulate the mouth of gushing oil and gas wells, as well as to regulate their operational modes.
Ahad Kh. Janahmadov, Maksim Y. Javadov
Chapter 7. Fractal Fatigue Analysis of Valve Units of Sucker Rod Pumps
Abstract
The valves are designed for periodic isolation of the bottom of the borehole pump occupied by already received fluid from the pump-compressor tubing (PCT), where this fluid flows. The valves are much more susceptible to wear than a sleeve-plunger pair. Therefore, most of the round-trip operations during the well operation are linked to the replacement of valve assemblies.
Ahad Kh. Janahmadov, Maksim Y. Javadov
Chapter 8. Flicker Noise Spectroscopy (FNS) of Dynamics Signals and Its Application in Wear of Oil-Field Compressor Units (OFCU)
Abstract
The implementation of the new energy policy in Azerbaijan is impossible without scientific–technical progress at all levels of the energy complex, which is improving the energy efficiency and ensuring the environmental acceptability of energy facilities.
Ahad Kh. Janahmadov, Maksim Y. Javadov
Metadata
Title
Synergetics and Fractals in Tribology
Authors
Ahad Kh Janahmadov
Maksim Y Javadov
Copyright Year
2016
Electronic ISBN
978-3-319-28189-6
Print ISBN
978-3-319-28187-2
DOI
https://doi.org/10.1007/978-3-319-28189-6

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